/Engine/Plugins/Runtime/nDisplay/Source/DisplayClusterConfiguration/Public/DisplayClusterConfigurationTypes.h
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="NDisplay|Configuration") void GetViewportIds ( [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & OutViewportIds ) const